Activation in human auditory cortex in relation to the loudness and unpleasantness of low-frequency and infrasound stimuli.

ABSTRACT: Low frequency noise (LFS) and infrasound (IS) are controversially discussed as potential causes of annoyance and distress experienced by many people. However, the perception mechanisms for IS in the human auditory system are not completely understood yet. In the present study, sinusoids at 32 Hz (at the lower limit of melodic pitch for tonal stimulation), as well as 8 Hz (IS range) were presented to a group of 20 normal hearing subjects, using monaural stimulation via a loudspeaker sound source coupled to the ear canal by a long silicone rubber tube. Each participant attended two experimental sessions. In the first session, participants performed a categorical loudness scaling procedure as well as an unpleasantness rating task in a sound booth. In the second session, the loudness scaling p

SUBMITTER: Behler O 

PROVIDER: S-EPMC7034801 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature